injection support was not found

[madunix at gmail.com]

How can I enable wireless injection?

pons at pons-Lenovo:~$ uname -a
Linux pons-Lenovo 2.6.35-28-generic #49-Ubuntu SMP Tue Mar 1 14:40:58
UTC 2011 i686 GNU/Linux



sudo iwconfig
lo        no wireless extensions.

eth0      no wireless extensions.

eth1      IEEE 802.11bg  ESSID:"linksys"
          Mode:Managed  Frequency:2.457 GHz  Access Point: 00:22:6B:7B:11:AF
          Bit Rate=54 Mb/s   Tx-Power:24 dBm
          Retry min limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Managementmode:All packets received
          Link Quality=5/5  Signal level=-40 dBm  Noise level=-89 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

pons at pons-Lenovo:~$ sudo airmon-ng stop eth1
[sudo] password for pons:


Interface	Chipset		Driver

eth1		Unknown 		wl (monitor mode disabled)

pons at pons-Lenovo:~$ sudo airmon-ng start eth1


Found 5 processes that could cause trouble.
If airodump-ng, aireplay-ng or airtun-ng stops working after
a short period of time, you may want to kill (some of) them!

PID	Name
845	avahi-daemon
846	avahi-daemon
877	NetworkManager
897	wpa_supplicant
3234	dhclient
Process with PID 3234 (dhclient) is running on interface eth1


Interface	Chipset		Driver

eth1		Unknown 		wl (monitor mode enabled)

pons at pons-Lenovo:~$ sudo airodump-ng eth1
ioctl(SIOCSIWMODE) failed: Invalid argument

ARP linktype is set to 1 (Ethernet) - expected ARPHRD_IEEE80211,
ARPHRD_IEEE80211_FULL or ARPHRD_IEEE80211_PRISM instead.  Make
sure RFMON is enabled: run 'airmon-ng start eth1 <#>'
Sysfs injection support was not found either.